Doorknob



FIG. 1 is a rear elevational view of a doorknob of the new design;

FIG. 2 is a top plan view of the doorknob of FIG. 1;

FIG. 3 is a front elevational view of the doorknob of FIG. 1;

FIG. 4 is a perspective view of the doorknob of FIG. 1;

FIG. 5 is a rear elevational view of a second embodiment of a doorknobof the new design;

FIG. 6 is a top plan view of the doorknob of FIG. 5;

FIG. 7 is a front elevational view of the doorknob of FIG. 5; and,

FIG. 8 is a perspective view of the doorknob of FIG. 5.

The portions of the Figures shown in phantom lines are not part of theclaimed design but are for illustration purposes only.

The ornamental design for a doorknob, as shown and described.